I use Premiere Pro and I'm not doing any fancy Harry Potter type special effects, is there really a need for me to buy After Effects? The most extreme effects I do are the occasional gunshot in shorts that I make. Is AE worth getting for the noise/grain reduction?

I suppose if any of use where to ask ourselves honestly do we really need half the stuff we have the answer would probably be no. But we carry on treating ourselves nontheless...
After effects is the absolute business.